on mac's use the dropin replacement eva-decord (EvolvingLMMs-Lab#632)

Author: CLARKBENHAM

pyproject.toml

@@ -68,7 +68,8 @@ dependencies = [
     "pre-commit",
     "pydantic",
     "packaging",
-    "decord",
+    "decord; platform_system != 'Darwin'",
+    "eva-decord; platform_system == 'Darwin'",
     "zss",
     "protobuf==3.20",
     "sentence_transformers",